UPDATE: Selena Gomez donned not one, but two glamorous dresses for the charity auction last night. She mingled with Oscar winner Jared Leto after changing into a black, cleavage-baring frock that she paired with a sexy fishnet veil.
The evening raised over $25 million for The Leonardo DiCaprioFoundation, which is dedicated to protecting wildlife around the globe. Robin Thicke and Bono took to the stage separately to serenade the star-studded audience as well.
The brunette stunner almost stole the show when she was spotted arriving at the inaugural gala in St. Tropez.
The 22-year-old hopped off a boat wearing a gown that came fully equipped with a thigh-high slit and beautiful draping.
Gomez paired the dress with slicked-back hair and a pair of matching pumps for the black tie affair.
Meanwhile, her pal Cara Delevingne opted to wear a decidedly more scandalous ensemble to the charity event.
The model wore a pair of super-short white shorts, a cropped matching fur coat, black ankle booties and a black quilted backpack.
And if that look wasn't enough for you, she accessorized with deep burgundy lipstick and a dramatic braid.
Both gals have been in Europe celebrating Gomez's birthday on a yacht with Tommy Chiabra.
In addition to multiple yachting excursions with Delevingne and a high-flying parasailing ride, Gomez has been seen getting cozy with the handsome Italian Chiabra while soaking up the sun.
The duo was also snapped smiling from ear to ear while riding a jet ski together on the Mediterranean waters.
Gomez even got handsy with the Royal Yacht founder's hair while holding onto his chest during the ride.
Sounds like she's having a birthday week she won't soon forget!
(Originally published on Wed, July 23, 2014, 3:31 P.M.)